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In this lesson, we will learn how to relate the interactions of types of ionizing radiation to their absorption by thicknesses of different density materials.
One half the
-rays from a 99mTc sample are absorbed by a 0.170-mm-thick lead shielding layer. Half of the
-rays that pass through the first layer of lead are absorbed in a second layer of equal thickness. What thickness of lead will absorb all but one in
A 2.00-cm-thick sodium-iodide crystal absorbs all but
of rays from a radioactive source. What percentage of rays will not be absorbed by 4.00-cm thickness of the same material?
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